DIY 5-Gallon Bucket Slow Sand Filter¶
BioSand & Media Filters • Est. CapEx: $5 USD • Lifespan: 7–15 Years
Technical Overview¶
A small-scale, low-cost water filter made from a 5-gallon bucket, intended for household use. It uses sand and biological layers to improve water quality, though real-world results showed marginal effectiveness.
Key Specifications & Engineering Parameters¶
| Parameter | Specification |
|---|---|
| Category | BioSand & Media Filters |
| Capital Cost (CapEx) | $5 USD |
| Power / Energy | 100% Gravity / Zero Power |
| Target Scale | Household (5–10 people) |
| Standard Lifespan | 7–15 Years |
| Technology Maturity | Field Tested |
| Primary Mechanism | Water flows by gravity through a sand layer where a biofilm (schmutzdecke) develops; particulates are trapped and pathogens are reduced through biological processes. Requires rough container walls to prevent channeling. |
Cross-Reference & Interactive Tools¶
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